@-webkit-keyframes xian {
 0% {
    padding:4px 0px;
  }
  10% {
    padding:4px 3px;
  }
  20% {
    padding:4px 6px;
  }
  30% {
    padding:4px 9px;
  }

  40% {
    padding:4px 12px;
  }

  50% {
    padding:4px 15px;
  }

  60% {
    padding:4px 18px;
  }

  70% {
    padding:4px 21px;
  }
  80% {
    padding:4px 25px;
  }
  90% {
    padding:4px 29px;
  }
  100% {
    padding:4px 32px;
  }
}

@keyframes xian {
  0% {
    padding:4px 0px;
  }
  10% {
    padding:4px 3px;
  }
  20% {
    padding:4px 6px;
  }
  30% {
    padding:4px 9px;
  }

  40% {
    padding:4px 12px;
  }

  50% {
    padding:4px 15px;
  }

  60% {
    padding:4px 18px;
  }

  70% {
    padding:4px 21px;
  }
  80% {
    padding:4px 25px;
  }
  90% {
    padding:4px 29px;
  }
  100% {
    padding:4px 32px;
  }
}

.xian {
  -webkit-animation-name: xian;
  animation-name: xian;
}